Name 

Description 

DequeMsg 

Receives a message from the message queue. 

EnqueMsg 

Add a message to the queue. 

MSGQUE_ERROR_E2BIG 

Error result if the message to read is bigger than the buffer passed to read the message. 

MSGQUE_ERROR_EABORT 

Error result. Unexpected error (queue head/tail out of bounds) 

MSGQUE_ERROR_NOMSG 

Error result if there is no message to read. (GetLastError() after peekmsg or readmsg returns -1) 

MSGQUE_EXCEPT 

read any msg BUT MsgID 

MSGQUE_NOWAIT 

if enque, fail send, return immediate on fail if deque, fail no msg ready to get... 

MSGQUE_WAIT_ID 

enque this message... it is a task ID which is waiting. 

PeekMsg 

Just peek at the next message.